The jewelry designer shows off her Paris apartment and her flawless fashion sense. By Derek Blasberg

Gaia Repossi

Gaia Repossi

The first thing one notices about Gaia Repossi, artistic director of her family's fine-jewelry business, is her composure. In fact, the great-granddaughter of house founder Gian Pietro Repossi handles herself with such grace and dresses with such delibera

Gaia Repossi

Gaia Repossi

Designer Alexander Wang, with whom she collaborated (as well as with Joseph Altuzarra) on the jewelry for their fall collections, agrees. "She has excellent taste but is still understated and discreet," he explains. "Which I love."